destroy grabbers and other stuff on hyperiond restart via webui (#375)

* remove obsolete kodi code for grabbers

* destroy grabbers and other stuff on hyperiond restart via webui

src/hyperiond/hyperiond.h

@@ -49,6 +49,7 @@
 
 class HyperionDaemon : public QObject
 {
+	Q_OBJECT
 public:
 	HyperionDaemon(QString configFile, QObject *parent=nullptr);
 	~HyperionDaemon();
@@ -65,6 +66,9 @@ public:
 	void createGrabberV4L2();
 	void createSystemFrameGrabber();
 
+public slots:
+	void freeObjects();
+
 private:
 	void createGrabberDispmanx();
 	void createGrabberAmlogic();